نتایج جستجو برای: optimum weight of structure increases

تعداد نتایج: 21261566  

Journal: :Applied and environmental microbiology 1986
T C Beaman P Gerhardt

Twenty-eight types of lysozyme-sensitive spores among seven Bacillus species representative of thermophiles, mesophiles, and psychrophiles were obtained spanning a 3,000-fold range in moist-heat resistance. The resistance within species was altered by demineralization of the native spores to protonated spores and remineralization of the protonated spores to calcified spores and by thermal adapt...

Journal: :Computational Intelligence and Neuroscience 2021

The particle swarm optimization algorithm (PSO) is a meta-heuristic with intelligence. It has the advantages of easy implementation, high convergence accuracy, and fast speed. However, PSO suffers from falling into local optimum or premature convergence, better performance desired. Some methods adopt improvements in parameters, initialization, topological structure to enhance global search abil...

H. Yousefpour Pirbazari, M. Mohseni, V. Aghtouman,

The present study was conducted to determine the best feeding rates expressed as percent of body weight in Persian sturgeon fingerlings at different body weights. Eighteen fiberglass tanks each holding 30 fingerlings with an average initial body weight of 19.45 ± 0.5 g were used in this experiment. Six different feeding trials (1, 2, 3, 4, 5 and 6 percent of body weight) were employed an...

Journal: :International journal of multidisciplinary research and analysis 2022

The pollution caused by dyestuffs has been a serious environmental problem for years. Within the overall category of dyestuffs, Remazol Brilliant Blue R (RBBR) is an anthraquinone dye used in textile industries. This paper concerns study different experimental parameters which affect decolorization efficiency RBBR mixture. Thermal degradation done carried out with 4 mL 10 ppm solution into reac...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1389

in this thesis, phosphorus ylides [phbppy], [no2bppy] and [brbppy] have been synthesized through the formation of phosphonium salt and dihydrogenation, followed by the reaction of pd(oac)2 and the orthopalladated dinuclear complexes [pd(?-cl)(phbppy)]2, [pd(?-cl)(no2bppy)]2 and [pd(?-cl)(brbppy)]2 have been produced. the reaction of dinuclear complexes and bidentate ligands [l = bipy (2,2-bipyr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

2005
T. J. Pritchard M. Gilbert

1. Abstract In the past few decades plastic layout optimization methods have been largely ignored in favour of those based upon elastic design principles. However, when multiple load cases are present elastic methods are generally computationally expensive and/or are prone to finding local optima. Therefore, they may not at present provide a suitable basis for practical truss layout optimizatio...

2014
Laura T. Beilstein Stephan Rudolph

Abstract: In this paper a general methodology for minimum weight selection of structural joints is reviewed. The evaluation and selection technique is based on analytical weight formulae for structural joints including different joining technologies for which through the use of Buckingham’s Pi-Theorem a complete set of dimensionless similarity parameters is derived. This formal approach offers ...

Today concrete is most generally utilized development material in the world due to its strength and sturdiness properties. To attain good strength, curing of concrete is important so we introduce the concept of self-curing concrete rather than immersion or sprinkle curing to avoid water scarcity. It was observed that water solvent polymers can be utilized as a self-curing agent, i.e. polyethyle...

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